From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] Boottime: A tool for automatic measurement of kernel/bootloader boot time
Date: Fri, 12 Oct 2012 13:53:16 +0000 [thread overview]
Message-ID: <201210121353.16798.arnd@arndb.de> (raw)
In-Reply-To: <20121012134813.GK21164@n2100.arm.linux.org.uk>
On Friday 12 October 2012, Russell King - ARM Linux wrote:
> > root at ME:/ cat /sys/kernel/debug/boottime/bootgraph
> > [ 0.185254] calling splash+0x0/0x0
> > [ 2.984335] initcall splash+0x0/0x0 returned 0 after 2799 msecs.
> > [ 2.984335] calling autoboot_delay+0x0/0x0
> > [ 4.089513] initcall autoboot_delay+0x0/0x0 returned 0 after 1105 msecs.
> > [ 4.089513] calling load_kernel+0x0/0x0
> > [ 4.239174] initcall load_kernel+0x0/0x0 returned 0 after 149 msecs.
> > [ 4.239174] calling boot_kernel+0x0/0x0
> > [ 4.276260] initcall boot_kernel+0x0/0x0 returned 0 after 37 msecs.
> > [ 4.276260] calling uncompress_ll_init+0x0/0x0
> > [ 4.276260] initcall uncompress_ll_init+0x0/0x0 returned 0 after 0 msecs.
> > [ 4.276260] Freeing init memory: 0K
>
> Umm, what happened to sysfs not becoming procfs v2? I thought we had
> a fairly strict requirement for "one value per file and not nicely
> formatted" for sysfs?
>
I was thinking the same thing at first, but then I noticed it's actually
debugfs, which has no such rules.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de>
To: "Russell King - ARM Linux" <linux@arm.linux.org.uk>
Cc: Lee Jones <lee.jones@linaro.org>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
Dan Murphy <dmurphy@ti.com>, Nishanth Menon <nm@ti.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linus.walleij@stericsson.com,
Jonas Aaberg <jonas.aberg@stericsson.com>,
Will Deacon <will.deacon@arm.com>,
Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Subject: Re: [PATCH] Boottime: A tool for automatic measurement of kernel/bootloader boot time
Date: Fri, 12 Oct 2012 13:53:16 +0000 [thread overview]
Message-ID: <201210121353.16798.arnd@arndb.de> (raw)
In-Reply-To: <20121012134813.GK21164@n2100.arm.linux.org.uk>
On Friday 12 October 2012, Russell King - ARM Linux wrote:
> > root@ME:/ cat /sys/kernel/debug/boottime/bootgraph
> > [ 0.185254] calling splash+0x0/0x0
> > [ 2.984335] initcall splash+0x0/0x0 returned 0 after 2799 msecs.
> > [ 2.984335] calling autoboot_delay+0x0/0x0
> > [ 4.089513] initcall autoboot_delay+0x0/0x0 returned 0 after 1105 msecs.
> > [ 4.089513] calling load_kernel+0x0/0x0
> > [ 4.239174] initcall load_kernel+0x0/0x0 returned 0 after 149 msecs.
> > [ 4.239174] calling boot_kernel+0x0/0x0
> > [ 4.276260] initcall boot_kernel+0x0/0x0 returned 0 after 37 msecs.
> > [ 4.276260] calling uncompress_ll_init+0x0/0x0
> > [ 4.276260] initcall uncompress_ll_init+0x0/0x0 returned 0 after 0 msecs.
> > [ 4.276260] Freeing init memory: 0K
>
> Umm, what happened to sysfs not becoming procfs v2? I thought we had
> a fairly strict requirement for "one value per file and not nicely
> formatted" for sysfs?
>
I was thinking the same thing at first, but then I noticed it's actually
debugfs, which has no such rules.
Arnd
next prev parent reply other threads:[~2012-10-12 13:53 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-11 14:42 [PATCH] Boottime: A tool for automatic measurement of kernel/bootloader boot time Lee Jones
2012-10-11 14:42 ` Lee Jones
2012-10-11 15:24 ` Christian Gmeiner
2012-10-11 15:24 ` Christian Gmeiner
2012-10-11 15:36 ` Lee Jones
2012-10-11 15:36 ` Lee Jones
2012-10-11 20:17 ` Nishanth Menon
2012-10-11 20:17 ` Nishanth Menon
2012-10-12 9:37 ` Lee Jones
2012-10-12 9:37 ` Lee Jones
2012-10-12 9:51 ` Lee Jones
2012-10-12 9:51 ` Lee Jones
2012-10-12 13:35 ` Dan Murphy
2012-10-12 13:35 ` Dan Murphy
2012-10-12 13:45 ` Lee Jones
2012-10-12 13:45 ` Lee Jones
2012-10-12 13:48 ` Russell King - ARM Linux
2012-10-12 13:48 ` Russell King - ARM Linux
2012-10-12 13:53 ` Arnd Bergmann [this message]
2012-10-12 13:53 ` Arnd Bergmann
2012-10-12 14:01 ` Lee Jones
2012-10-12 14:01 ` Lee Jones
2012-10-12 16:36 ` Dan Murphy
2012-10-12 16:36 ` Dan Murphy
2012-10-12 16:42 ` Lee Jones
2012-10-12 16:42 ` Lee Jones
2012-10-15 15:52 ` Dan Murphy
2012-10-15 15:52 ` Dan Murphy
2012-10-16 7:34 ` Lee Jones
2012-10-16 7:34 ` Lee Jones
2012-10-23 7:19 ` Lee Jones
2012-10-23 7:19 ` Lee Jones
2013-06-09 8:17 ` Steve Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=201210121353.16798.arnd@arndb.de \
--to=arnd@arndb.de \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.